branching vs ramous

branching is a noun but ramous is not a noun.

Word	Noun	Adjective	Verb	Adverb
branching	Yes	Yes	No	No
ramous	No	Yes	No	No

As adjectives, branching and ramous are synonyms defined as:

Other synonyms of branching include branched, ramate, ramose.

branching (noun)	ramous (noun)
the act of branching out or dividing into branches

branching (adjective)	ramous (adjective)
having branches	having branches
resembling the branches of a tree